Friction drill feed



Nov. 16 1926. 1,607,543 S. D. MCCREA FRICTION DRILL FEED Filed May 19, 1925 2 Sheets-Sheet l m 53 INVENToR.

Samae /ICU'ea'J Nov. 16 1926, 1,607,543

s. D. MGCREA 4 FRI'CTION DRILL FEED Filled May 19, 192s 2 sheets-sheet. 2

u f .f i N IQ l ww K5 Il! Y b5 no, Q m W N X N N N INVENToR.

` Small/Wre@ ATTORNEY- Patented Nov. 16, 1926.

Unir-sn STATES SAMUEL n; MQCREA, or GREAT FALLS, MONTANA.

' FRro'rIoN DRILL FEED.

Application filed May 19. 1925. Serial No. 31,364.

This invention relates to well drilling machinery and pertains particularly to the drill feed mechanism.

The primary object of this invention is the provision, ina manner as hereinafter set forth, of an improved means for releasing or lowering of the drill cable which carries the drill with which the well is being sunk.

Another, object of the invention is the provision, in a manner as hereinafter set forth, of an improved means Vfor paying outv the drillcable to greatly reduce the labor connected with the work, and eliminating the probability of the operator slipping the drilling line vthrough the clamps and thereby damaging the line and reducing the life of the same.

This invention contemplates the construction of a set of bearings upon the top of a walking beam adjacent one end thereof or in any other desirable location or place on the beam and in these bearings there is seated ashaft carrying therebetween a drum. Upon the outer ends of this shaft there is carried a friction disc or wheel about which a brake shoe is passed which shoe is operated by means of a lever pivotally mounted upon the side of the walking beam, and which lever in turn is controlled by a rope running to al control lever mounted below the walking beam. The drum mounted upon the walking beam has the cable wound thereabout and the same is fed therefrom .by a

member in the end of the beam, directly downwardly toward the well shaft. A weightelement is supplied for the purpose of rewinding the drum cable after the same at intervals has been unwound during the paying out of the drill cable.

A further and final object of the invention is the provision, in a manner as hereinafter set forth, of an improved means for paying or letting out lof the drill cable, which will be simple in construction, easily installed, simple to operate and inexpensive to manufacture and set up.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming a part of this specication, with the understanding that the invent-ion is not confined to any strict conformity with the showing of the drawings but may be changed and modified so long as such changes andy modilications mark no material departure from the salient showing the structure embodying this inventionV associated therewith.

Figure 2 is a top plan view of the struc# ture embodying this invention and one end of the walkingbeam ofthe machinery.

Figure 3 is `an end view of the walking beam showing the structure 'embodying this invention in side elevationy Figure 4- is a fragmentaryv vertical longitudinal sectional view through the walking beam showing in end elevation the structure embodying this invention.

Figure 5 is a section taken upon the line 5-5 of Figure aand, Figure6 isla `detailed perspective view of the cable guide device. y

Referring now to the drawings in 'detail wherein like numerals of reference indicate corresponding parts throughout the several views, there is indicated by the numeral 1 a supporting post commonly known in the well drilling trade as a Samson post. On the top of this post is mount-ed the cap 2 carrying the bearing 3, which co-acts vwith a superposed plate 4 carrying similar bearings upon the under sideand these bearings are connected together by means o-f a pivot pin 5.

The plate 4 is secured to and supports, at its central point,a' walking beam 6. l

At one end ofthe walking beam 6 there is mounted upon the top a bearing 7 in which there is connected the upper end Vof an operating pitman 8.

Beneath the walking beam 6 and adjacent Y Sli) the opposite end lthereof there is positioned a v `The walking beam 6 has the end, remote from the end to which the pitman 8 is attached, slotted longitudinally inwardly as indicated at 12 and there is placed upon the top of the walking beam adjacent and rearwardly of this slot, a plate 13 having at each liU end thereof the upstanding supports 14 upon the top of which supports the bearings 15 are formed.

Mounted upon the upright members 14 in the bearings 15 and connecting the same, is a shaft 16, upon which is mounted between the bearings the drum 17.

Mounted upon and keyed to the shaft' 16 is a pair of pulleys 18, one adjacent each end thereof and upon the outside of the bearings 15 as clearly shown in Figure 3.

There. is also mounted upon the shaft 16 at one end thereof and keyed thereto with the adjacent pulley, a friction or brake drum 19 and passed about this friction drum 19 is a brake-shoe 20; the ends ofthe brake-shoe are secured as at 21 to a lever member indicated as a whole by the numeral 22. This lever member is pivoted as at 23 between the points 21 at which the ends of the brakeshoe are secured, the pivot member 23 being secured to one side of the vwalking' beam 6 below the friction drum 19, as shown in Figure 1.

' The lower end of the lever 22 has an aperture therethrough and there is secured in this aperture a pull or control rope 24 which passes to the central portion of the walking beam where it is passed between a pair of pulley members 25 which are located upon one side of the walking beam directly above the pivotal point thereof. rlhe pull rope 24 then passes downwardly along the side of the Samson post where it is connected to a control lever 26. As shown this control lever has one end secured in a bearing 27 which is mounted upon the side of the Samson post and the lever contacts with and engages the teeth 11 of the rack bar 10 which is mounted upon the headache post 9.

As showneach of the pulley wheels 18 has a rope 28 secured thereto and these ropes are passed to a point beyond the central part of the walking beam 6 and 'over a pulley member 29 where they pass downwardly to and engage the sides of a counter-weight box 30. As is shown this counter-weightl box is upon the opposite side of the pivotal point of the walking beam 6 from the end which carries the drum 17 and the other mechanism and this counter-weight serve to rewind the cable 31 on the drum after the cable has been paid out therefrom.

The drum 17 carries wound thereabout a cable 31 which is attached to the guide member 33 which in turn supports the clamp 32 the main drill cable and drill members (not shown).

Depending from the slotted ends of the walking beam 6 is a cable guide member indicated generally by the numeral 83 and this guide member comprises a pair of of substantially T-shaped members 34 and 35 respectively, the member 35 being in an inverted position with respect to the'member 34 and the long portion thereof slides in guide loops 36 formed upon the depending shank of the member 34. The head or part 37 adjacent the member 84 lies in a transverse slot 38 cut into the upper surface of the walking beam 6 across the slotted portion 12. The transverse portion or head 39 of the inverted T-shaped member 35 has its ends slotted as indicated at 40, to receive Athe supporting links 44 of the rope clamp 32, and'there is passed through these slotted ends securing bolts 42 which act to prevent the links'from slipping from the slots.

At the lower end of the member 35 intermediate the ends of the head portion 39,

there is formed a recess in which the lower en'd of the cable 31 is positioned. An appropriate securing element such as that indicated at 45 is passed through the head over the cable 31 at this recessed point to secure the cable to the head. 1t will be readily seen that upon raisingor lowering of the cable 31 upon the drum 17, the portion 35 Vof the structure 33 will be raised and lowered therewith thus raising` and lowering the drill tool carrying rope which is secured in the clamp 32.

ln operation the cable 31 is wound about the drum which is carried as shown upon the walking beam, and as the cable is paid out to lower the drill cable clamp 32 to allow the drill to bore into the ground, the drum is controlled by means of the brake'- shoe 20 which is passed about the friction drum 19 and controlled by the lever 26 and the rope 24. By raising thelever 26 the brake-shoe 20 will release its grip upon the friction drum and allow the drum to revolve to pay out or rewind the cable 31 to feed the drill cable into the ground or partially withdraw the same, and when the lever 26 is pressed downwardly the shoe presses about the drum and thus holds the cable drum against revolution.

The counter-weight 30 acts to rewind the 'able 31 after the cable has been paid out7 upon the release of the clamps attached to the main drilling rope and upon the release of the control lever 26 to allow the friction shoe 2O to loosen its grip upon the drum 19.

From the foregoing description it will be readily seen that there has been'provided a new and novel means for paying out the drill cable which increases the efficiency with which the .drill can be operated and very materially lengthen the time that a wire cable il i) can be used on account of the elimination of the present method of slipping theV same through the cable clamps.

Having thus described my invention what I claim is 1. In a well drilling rig structure of the character set forth the combination with a Samson post having a walking beam pivotally mounted thereon, and having a slot cut in one end and a groove formed transversely of said end and slot, o f a cable drum revolubly mounted upon said beam adjacent said groove and slot, means for controlling the paying out of a cable from said drum, a relatively long two element structure having the elements thereof slidably secured together, one element having a cross arm at one end for engagement in said groove, the structure extending through said slot, the free end of said cable being secured to the lower part v of the other element, and means for supporting a drill cable securing clamp from the said lower end of said other element.

2. In a well drilling rig structure of the character set forth the combination with a Samson post having a walking beam pivotally mounted thereon, and having a slot cut in one end and further having a groove formed transversely of said end and slot, of a substantially T-shaped member having the head thereof positioned in said groove and the body arranged to extend through said slot, guide yokes formed upon said body, an inverted substantially `T-shaped member having the body thereof arranged parallel with the first mentioned member body and slidably connected therewith through said yokes, means for feeding the inverted T-shaped member along the first mention-ed member and means whereby a drill cable clamp may be secured to the head of said inverted member to depend therefrom.

3. In a well drilling rig structure of the character set forth, the combination with a Samson post having a walking beam pivotally mounted thereon, and having a slot cut in one end and further having a groove formed transversely of said end and slot, of a pair of bearings mounted adjacent said slot upon said beam, a shaft mounted therein and extending beyond the sides thereof, a cable drum mounted on said shaft, pulley members mounted on said shaft one at each end thereof, a brake drum mounted on said shaft'adjacent one of said pulleys, means for controlling said drum, a flexible cable connected to each of said pulleys and extended to a point beyond the Samson post and passing over revoluble elem-ents carried by the beam, a counter-balance suspended from the other ends of said cables, a depending hanger carried by the groove at the slotted end of said beam, a portion of said hanger being shiftable longitudinally of the other and adapted to grip and support a drill tool cable, and a cable wrapped about said cable drum and having one end attached to said shiftable portion for the support of the same.

In testimony whereof, I aflix my signature hereto.

sAMUEnD. MCCREA.

ISU 

